It does sound like it's worth considering. One more caveat I would add since you mentioned you are in tech -- Velocity Black is even more big city focus than Cent. When I first subscribed, the app had a prompt asking you to select London, New York or LA when you first create your account, and the services are based on the selection. The list has since then expanded, but I am pretty sure it does not cover the Bay Area or Seattle.

It's still a solid travel agent outside of those focus cities -- but say you are based out of another country/city for a few months a year, and you need reservations for guests/meetings. You will be screwed with either Velocity or Centurion.